420703947 has 36 divisors (see below), whose sum is σ = 679587480. Its totient is φ = 250048512.

The previous prime is 420703931. The next prime is 420703961. The reversal of 420703947 is 749307024.

It is not a de Polignac number, because 420703947 - 2⁴ = 420703931 is a prime.

It is a super-2 number, since 2×420703947² = 353983622042757618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420703967) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45163 + ... + 53675.

It is an arithmetic number, because the mean of its divisors is an integer number (18877430).

Almost surely, 2^420703947 is an apocalyptic number.

420703947 is a deficient number, since it is larger than the sum of its proper divisors (258883533).

420703947 is a wasteful number, since it uses less digits than its factorization.

420703947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572 (or 8552 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 420703947 is about 20511.0688897483. The cubic root of 420703947 is about 749.3053995723.

The spelling of 420703947 in words is "four hundred twenty million, seven hundred three thousand, nine hundred forty-seven".